Indicating-poise for scale-beams



(No Model.) 5 Sheets-Sheet 1.

v R. L. HASSELL.

. INDIGATING POISE FOR SCALE BEAMS. v No. 274,493. Patented Mar.27,1883.

N. PEYEE Pholo-Lmvognw. Wuhh im. D. c.

5 Sheets-Sheet 2.

(No Model.)

B. L. HASSELL.

INDIGATING POISE FOR SCALE BEAMS.

No. 274,493. Patented M'ar.27,1883.

(No Model.) 5 Sheets-Sheet 3.

' R. L. HASSELL.

INDIGAT ING POISE FOR SCALE BEAMS.

Patented Mar. 27,1883.

(No Model.) a 5 Sheets-Sheet 4. R. L. HASS-ELL.

INDIOATING POISE FOR SCALE BEAMS.

No. 274,493. Patented Mar.2'7, 1883.

N. PETERS. Pbnhmognnlmn Washing. n. c.

(No Model.) I 5 Sheets-Sheet 5. R. L. HAS$ELL.

INDIUATING POISE FOR SCALE BEAMS. No. 274,493. Patented Mar.27,1883.

WW KM @HWSM UNITED STATES PATENT OFFICE.

RICHARD L. HASSELL, OF CHICAGO, ILLINOIS.

INDICATING-POIS E FOR SCALE BEAiVlS.

SPECIFICATION forming part .of Letters Patent No. 274,493, dated March27, 1883,

(X0 model.)

To all whom it may concern:

Be it known that I, RICHARD LITTELL HassELL, a citizen of the UnitedStates, residing at Chicago, in the county of Cool: and State ofIllinois, have invented certain Improvements in Scale-Beams, of whichthe following is a specification.

My present invention relates to improvements on that for which a patentwas granted to me October 28, 1879, No. 220,975.

The objects of my improvements are, first, to provide a more convenientarrangement for moving the poise along the beam second, to secure thesimultaneous movement of the poise and revolving hand; third, to moreeffectually prevent dust or dirt getting into the internal mechanism ofthe poise. I attain these objects by the mechanism illustrated in theaccompanying drawings, in which- Figure l is a front view of my improvedscale-beam and poise, showing the beamrack or trig-loop at the end ofthe beam in section. Fig. 2 is a face view of the poise shown in Fig. las it appears after the removal of the faceplate P, the glass 0, and therubber ring is, Fig. 7. Fig. 3 is the same as Fig. 2, having thedial-plate D and the revolving handf removed. Fig.4 is a verticallongitudinal section at line 00 00 Figs. 6 and 7. Fig. 5 is an underside view with the poise in section at line a2 :12, Figs. 1 to 4. Fig. 6is an external end view of the poise shown in Fig. 1. Fig. 7 is avertical transverse section at line as as, Fig. 1. Fig. 8 is a view ofthe beam-rack ortrig-loop shown in section in Fig.1. Fig. 9 is avertical longitudinal section of a modification; Fig. 10, averticaltransverse section of the same modification. Fig ll is a view of theupper part of the poise and part of the beambar, showing the arrangementadopted when it is desired that the poise should be mounted on rollers.Fig. 12 is a vertical transverse section at line x 00 Fig. 1.

Like characters indicate like parts in the different views.

I shall generally prefer to have my poise mounted on a double-barredbeam, as shown.

The first object of my present invention is to provide a more convenientarrangement for moving the poise along the beam.

In my former patent, No. 220,975, I have provided my poise with a devicefor accurately moving the poise short distances onthe beam, whichdevice, when at rest, automaticallylocks the poise upon the beam. Inmany cases it is desirable that the poise should not be automaticallylocked upon the beam. By substituting spur or bevel gearing for thewormgear of my former patent the poise is not locked upon the beannandcan be rapidly and more conveniently moved the entire length of the beamor an infinitesimal distance on the same, as required.

In Fig. 7 it will be seen that. the bevel-gear b is fastened to theshaft 0 which has fastened to its lower end the handleI-I. The gear I)meshes with the gear b which is fastened to the shaft 1). This shaft 1)has also fastened to it the gears a a, which mesh with teeth out in thelower edge of each bar. By turning the handle H, therefore, the poisecan be moved along the beam. The shaft b hasalso fastened to it thegears E E, and these mesh with the pinions it, (partly seen in Fig. 7,)fastened to the back of the gears F, and the gears F mesh with the gearsc, to which are fastened the handsf, which revolve before the dials.Turning the handle H therefore moves the poise along the beam and alsocauses the haudsfto revolve before the dials.

In the modification shown in Figs. 9 and 10 the handle H is fastened toa shalt, h to which are also fastened the gears b and these gears mesh,as shown, with the gears E E. This arrangement may be used singly, asshown in Fig. 10, or it may be used in combination with the bevel-gearsabove described. In this last case it will be best to have acrank-shaped handle attached to the vertical shaft b Fig. 7, and thegears may be so proportioned that by turning the crai'ik'shaped handlethe poise is rapidly moved long distances on the beam, and by turningthe knob II, attached to the shaft I)", Fig. 10, the poise may be slowlyand accurately moved short distances on the beam. In cases in which theupper beam, N, is not used it will often be desirable to have anotherand a smaller bevel-gear meshing with the bevel-gear b and attached to avertical shaft which passes up through the top of the poise, said shafthaving fastened to its upper end a knob similar to H, so that by turningthe lower shaft, b the poise may be rapidly moved, and by turning theabove-mentioned upper shaft the poise may be slowly moved.

In another patent of even date herewith I have described a moving deviceconsisting of a rack formed on the side of one of the bars and avertical shaft carrying at its upper end a pinion gearing with said rackand at its lower-end a handle, by turning which the poise is moved. Thismoving device may, when desired, be used in combination with the movingdevice shown in Fi 10.

The handle H. may either be a knob, as shown in this patent,or may becrank-shaped, as shown in my other patent of even date herewith.

My second object is to secure the simultaneous movement of the poise andrevolving hand. The piece L, Fig. 4, rests directly on the beam andsustains the weight of the poise. By placing thin sheets of metalbetween the poise and the piece L at m the poise may be raised and thegear a made to mesh as closely as desired with the teeth in the beam. inaddition to this arrangement-,it will sometimes be desirable to have theshaft 1), which carries the gears a, mounted in the end of a lever, n.(Shown mostly by dotted lines in Fig. 3.) This lever has its hearing orfulcrum on the fixed shaftu, and at its lower end has a spring, a, asshown. It is evident that the pull of this spring on the end of thelever has a tendency to keep the gears a, which are fastened to theshaft 7), in snug contact with the teeth in the beam. There is one ofthese levers and springs at each end of the shalt. When these levers areused the holes in the casing S, through which the shaft 1) passes, willbe made sufficiently large to allow a little freedom of movement to theshaft. There is a slight groove turned in the hub of the gear 0, intowhich fits the spring (I. This spring acts as a sort of a brake, orimparts a certain stiliness to the movement of the gearc.

- My third object is to more effectually pre vent dust or dirt gettinginto the internal mechanism of the poise. I attain this by casing in thebeam B, so as to form a separate chamber for the beam to pass through,thus separating it from the other contents of the poise, except suchmechanism as may be in actual contact with the beam. This interiorcasing is marked S in the different figures. I prefer to have it castsolid with the poise.

By referringto my former patent, No. 220,975, it will be seen that lhave there cased in the mechanism, so that dust can only enter theinterior of the poise by means of the beam. This, however, I find admitsconsiderable, as the dirt which collects in the teeth of the beam isremoved by the action of the pinion a and falls into theinterior ot' thepoise. By the use of the casing S no dirt can enter the interior of thepoise, and that which is removed from the teeth of the beam by thepinion afalls into the opening B, Fig. 4, and out from the poise.

In some cases it may be desirable to have this opening straight downunder the pinion a and extend down through the bottom of the poise.

Fig. 8 is a representation of the loop in which the free end of the beamplays, technically called a beam-rack or trig-loop. A sectional view ofthis loop is seen at the end of the beam in Fig. 1. This beam-rack canbe placed at either end of the beam and in small counter-scales, inwhich the beam often becomes a vibrating frame supporting the scoop orplatform. The beam-rack is often placed at the opposite end to thatshown in Fig. 1. Suddenly throwing a weight on or taking it off theplatform of the scale causes the end of the beam to violently jerk up ordown in the opening Y in which the free end of the beam plays. Thissudden jarring is injurious to the beam, and is liable to break theglass 0, which covers the dials from dust, &c. To lessen this jarring 1place rubber or its equivalent at t, t, t, and t". The rubber may beplaced at any one or more or at all of these points. When it is placedat t t it is desirable that the parts of the beam which come in contactwith it be made a little broader than usual. I also put a rubber ringentirely around the glass 0. A cross-section of this rubber ring is seenat It, Fig. 7. To prevent the sudden jarring ot' the poise when it isviolently moved to either end of the beam, I provide stops g, havingrubber projections g. (Seen in Figs. 1 and 5.) A cross section of thisstop 9 and rubber g is seen in Fig. 12.

In my Patent No. 220,975 I have shown two revolving hands on the dial,which hands, as there described, revolve at diflerent rates of speed,one indicating the larger units and one the smaller. In my presentpatent I have preferred to show but one indicating-halal on the dial,which hand will indicate the smaller units, such as ounces, pounds,850., according to the size and purpose of the scale, and the largerunits may be marked on the upper beam, N, and indicated by a poi nterprojectin from the. top of the poise; or, in cases in which the upperbeam is not used, the larger units may be marked on the main beam B andindicated by a hand projecting from the side of the poise.

In addition to having the larger units marked on it, the upper beammaybe used for balancing or fora tare-beam, and for this purpose theline along which the pointer in the upper poise, M, t'avels may begraduated in any desired manner.

The arrangement of the gearing as shown is convenient, but notessential. The gearing used, its arrangement, and the graduations,figures, and arrangement of the dials will be determined by thedifferent requirements of the many sizes and varieties of scales towhich my improved poise will be applied.

It will often be desirable to use what is commonly known as steppedgearing or Hookes gearing, as this gives a much smoother motion. Whenstepped gearing is used itwill be best to have the lower part of thebeam containing the teeth made in longitudinal strips. These strips canbe riveted together and then fastened to the beam in any desired manner.It will always be best to have the teeth on each bar so cut as not to beopposite each other.

It will be understood that lead can be put in the suitable unoccupiedspaces in the interior of the poise to give the poise the desiredweight.

By substituting bevel-gears for the gears F and c the dials may be madeto face upward at any angle desired.

When it is desired to have the poise on rollers, the piece L may beextended sufficiently at the ends, as shown in Fig. 11, and rollersinserted.

I claim 1. In weighing-scales, a beam bar or bars carrying thecombination of revolving indicating mechanism, and a moving deviceeonsisting of mechanism substantially as hereinbefore described, and soarranged that the act of turning thehandle I l moves the poise along thebeam, said moving device not automatically locking the poise on thebeam.

2. In combination with a scale-beam, a movable poise carrying thecombination of revolving indicating mechanism and a device for accurately moving the poise any desired distance on the beam, said devicenot automatically lockin g the poise on the beam.

3. In weighing-scales, a beam bar or bars carrying the combination ofrevolving indicating mechanism, spur or bevel gearing, projectingshaftor shafts,and handle H,substantially as and for the purpose hereinbeforeset forth.

4. In combination with a scale-beam, the adjustable piece L, for thepurpose specified.

5. In weighing-scales, a scale-beam, in combination with gearing mountedon a lever or levers, said lever or levers being kept in position by aspring or springs, substantially as described, and for the purpose ofsecuring the simultaneous movement of the poise and revolving hand.

6. In weighing-scales, the combination of a scale-beam, the spring (Iand gear 0, substantially as described, and for the purpose ofsecuriugthe simultaneous movement of the poise and revolving hand.

7. In combination with a scale-beam and movable poise, the interioreasing, S, for the purpose specified.

S. The combination, substantially as hereinbefore described, of thelever )1, the spring a the shaft I), the gears a, and the beam-barsB.

9. In weighing-scales, a beam bar or bars carrying the combination ofrevolving indicating mechanism and a moving device, said moving deviceconsisting of a rack or racks, spur or bevel gearing, projecting shaft,and a handle, by turning which the poise is moved along the beam.

RICHARD LITTELL HASSELL.

Witnesses:

CHAS. E. WILD, D.- H. HENSHAW.

